InputNumber数字输入框
通过鼠标或键盘,输入范围内的数值。
何时使用#
当需要获取标准数值时。
代码演示
TypeScript
JavaScript
import { InputNumber } from 'infrad';
import React from 'react';
const onChange = (value: number) => {
console.log('changed', value);
};
const App: React.FC = () => <InputNumber min={1} max={10} defaultValue={3} onChange={onChange} />;
export default App;
+
$
+
$
cascader
TypeScript
JavaScript
import { SettingOutlined } from 'infra-design-icons';
import { Cascader, InputNumber, Select, Space } from 'infrad';
import React from 'react';
const { Option } = Select;
const selectBefore = (
<Select defaultValue="add" style={{ width: 60 }}>
<Option value="add">+</Option>
<Option value="minus">-</Option>
</Select>
);
const selectAfter = (
<Select defaultValue="USD" style={{ width: 60 }}>
<Option value="USD">$</Option>
<Option value="EUR">€</Option>
<Option value="GBP">£</Option>
<Option value="CNY">¥</Option>
</Select>
);
const App: React.FC = () => (
<Space direction="vertical">
<InputNumber addonBefore="+" addonAfter="$" defaultValue={100} />
<InputNumber addonBefore={selectBefore} addonAfter={selectAfter} defaultValue={100} />
<InputNumber addonAfter={<SettingOutlined />} defaultValue={100} />
<InputNumber
addonBefore={<Cascader placeholder="cascader" style={{ width: 150 }} />}
defaultValue={100}
/>
</Space>
);
export default App;
TypeScript
JavaScript
import { InputNumber } from 'infrad';
import React from 'react';
const onChange = (value: string) => {
console.log('changed', value);
};
const App: React.FC = () => (
<InputNumber<string>
style={{ width: 200 }}
defaultValue="1"
min="0"
max="10"
step="0.00000000000001"
onChange={onChange}
stringMode
/>
);
export default App;
TypeScript
JavaScript
import { Checkbox, InputNumber, Space } from 'infrad';
import React, { useState } from 'react';
const App: React.FC = () => {
const [keyboard, setKeyboard] = useState(true);
return (
<Space>
<InputNumber min={1} max={10} keyboard={keyboard} defaultValue={3} />
<Checkbox
onChange={() => {
setKeyboard(!keyboard);
}}
checked={keyboard}
>
Toggle keyboard
</Checkbox>
</Space>
);
};
export default App;
TypeScript
JavaScript
import { Button, InputNumber, Space } from 'infrad';
import React, { useState } from 'react';
const App: React.FC = () => {
const [value, setValue] = useState<string | number>('99');
return (
<Space>
<InputNumber min={1} max={10} value={value} onChange={setValue} />
<Button
type="primary"
onClick={() => {
setValue(99);
}}
>
Reset
</Button>
</Space>
);
};
export default App;
TypeScript
JavaScript
import { ClockCircleOutlined } from 'infra-design-icons';
import { InputNumber, Space } from 'infrad';
import React from 'react';
const App: React.FC = () => (
<Space direction="vertical" style={{ width: '100%' }}>
<InputNumber status="error" style={{ width: '100%' }} />
<InputNumber status="warning" style={{ width: '100%' }} />
<InputNumber status="error" style={{ width: '100%' }} prefix={<ClockCircleOutlined />} />
<InputNumber status="warning" style={{ width: '100%' }} prefix={<ClockCircleOutlined />} />
</Space>
);
export default App;
4.19.0
TypeScript
JavaScript
import { InputNumber, Space } from 'infrad';
import React from 'react';
const onChange = (value: number) => {
console.log('changed', value);
};
const App: React.FC = () => (
<Space>
<InputNumber size="large" min={1} max={100000} defaultValue={3} onChange={onChange} />
<InputNumber min={1} max={100000} defaultValue={3} onChange={onChange} />
<InputNumber size="small" min={1} max={100000} defaultValue={3} onChange={onChange} />
</Space>
);
export default App;
TypeScript
JavaScript
import { Button, InputNumber } from 'infrad';
import React, { useState } from 'react';
const App: React.FC = () => {
const [disabled, setDisabled] = useState(true);
const toggle = () => {
setDisabled(!disabled);
};
return (
<>
<InputNumber min={1} max={10} disabled={disabled} defaultValue={3} />
<div style={{ marginTop: 20 }}>
<Button onClick={toggle} type="primary">
Toggle disabled
</Button>
</div>
</>
);
};
export default App;
TypeScript
JavaScript
import { InputNumber, Space } from 'infrad';
import React from 'react';
const onChange = (value: number | string) => {
console.log('changed', value);
};
const App: React.FC = () => (
<Space>
<InputNumber
defaultValue={1000}
formatter={value => `$ ${value}`.replace(/\B(?=(\d{3})+(?!\d))/g, ',')}
parser={value => value!.replace(/\$\s?|(,*)/g, '')}
onChange={onChange}
/>
<InputNumber
defaultValue={100}
min={0}
max={100}
formatter={value => `${value}%`}
parser={value => value!.replace('%', '')}
onChange={onChange}
/>
</Space>
);
export default App;
TypeScript
JavaScript
import { InputNumber } from 'infrad';
import React from 'react';
const App: React.FC = () => <InputNumber min={1} max={10} defaultValue={3} bordered={false} />;
export default App;
¥
¥
¥
TypeScript
JavaScript
import { UserOutlined } from 'infra-design-icons';
import { InputNumber } from 'infrad';
import React from 'react';
const App: React.FC = () => (
<>
<InputNumber prefix="¥" style={{ width: '100%' }} />
<br />
<br />
<InputNumber addonBefore={<UserOutlined />} prefix="¥" style={{ width: '100%' }} />
<br />
<br />
<InputNumber prefix="¥" disabled style={{ width: '100%' }} />
</>
);
export default App;
API#
属性如下
成员 | 说明 | 类型 | 默认值 | 版本 |
---|---|---|---|---|
addonAfter | 带标签的 input,设置后置标签 | ReactNode | - | 4.17.0 |
addonBefore | 带标签的 input,设置前置标签 | ReactNode | - | 4.17.0 |
autoFocus | 自动获取焦点 | boolean | false | - |
bordered | 是否有边框 | boolean | true | 4.12.0 |
controls | 是否显示增减按钮,也可设置自定义箭头图标 | boolean | { upIcon?: React.ReactNode; downIcon?: React.ReactNode; } | - | 4.19.0 |
decimalSeparator | 小数点 | string | - | - |
defaultValue | 初始值 | number | - | - |
disabled | 禁用 | boolean | false | - |
formatter | 指定输入框展示值的格式 | function(value: number | string, info: { userTyping: boolean, input: string }): string | - | info: 4.17.0 |
keyboard | 是否启用键盘快捷行为 | boolean | true | 4.12.0 |
max | 最大值 | number | Number.MAX_SAFE_INTEGER | - |
min | 最小值 | number | Number.MIN_SAFE_INTEGER | - |
parser | 指定从 formatter 里转换回数字的方式,和 formatter 搭配使用 | function(string): number | - | - |
precision | 数值精度,配置 formatter 时会以 formatter 为准 | number | - | - |
readOnly | 只读 | boolean | false | - |
status | 设置校验状态 | 'error' | 'warning' | - | 4.19.0 |
prefix | 带有前缀图标的 input | ReactNode | - | 4.17.0 |
size | 输入框大小 | large | middle | small | - | - |
step | 每次改变步数,可以为小数 | number | string | 1 | - |
stringMode | 字符值模式,开启后支持高精度小数。同时 onChange 将返回 string 类型 | boolean | false | 4.13.0 |
value | 当前值 | number | - | - |
onChange | 变化回调 | function(value: number | string | null) | - | - |
onPressEnter | 按下回车的回调 | function(e) | - | - |
onStep | 点击上下箭头的回调 | (value: number, info: { offset: number, type: 'up' | 'down' }) => void | - | 4.7.0 |
方法#
名称 | 描述 |
---|---|
blur() | 移除焦点 |
focus() | 获取焦点 |
FAQ#
为何受控模式下,value
可以超出 min
和 max
范围?#
在受控模式下,开发者可能自行存储相关数据。如果组件将数据约束回范围内,会导致展示数据与实际存储数据不一致的情况。这使得一些如表单场景存在潜在的数据问题。
为何动态修改 min
和 max
让 value
超出范围不会触发 onChange
事件?#
onChange
事件为用户触发事件,自行触发会导致表单库误以为变更来自用户操作。我们以错误样式展示超出范围的数值。